jeinsaume



(Remodel.) 8 2sheetssneet 1. A. JEANSAUME. l 8

MACHINE PGR SAWING. BLOCKS 0F STONE. N0. 508,825.l

Patented Nov. '14, 1893.l

(No Model.) I 2 Sheets-Sheet 2. A. JBANSAUME. MAHINE FOR SAWING BLOCKS0F STONE. f N0. 508,825. Patented NOV. 14, 1893.

Fm. l

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. WASHINGTON, n. c.

"UNITED STATES* PATENT, OFFICE."

ANTOINE .IEANSAUME, OF PARIS., FRANCE.

MACHINE FOR sAwlNG BLOCKS OF sToNEf SPECIFICATION forming part ofLetters Patent No. 508,825, dated November 14, 18.93. Application filedMath is', 17892. serial No. 425,493.- No moda.) Patented in FranceBeamter 12. 1891, No. 218,009.

To all A whoa/1, .it mag/concern:

-Be it known that I, ANTOINE JEANSAUME, of Paris, France, have inventeda new and Improved Machine for Sawing Blocks of Stone, (for which I haveobtained Letters Patentiu France, No. 218,009, dated December 12, 1891,)of which the following is a full, clear, and exact description. l Theobject of myinvention is to provide Improved stone saws forexpeditiously sawing blocks of stone, especially marble, into slabs ofany 'desired thickness.

yMyinvention also consists of means where- 'by slabs of various profileseau be cut.

That myrinvention may be better understood, I annex to this descriptiontwo sheets of drawings in whiehv Figure 1 shows, in elevation, thearrangement of the several parts of my machine. Fig. la is a diagram,intended to show, visibly, the slightly eccentric mounting of the drums.Fig. 2 represents the machine, the right side being a view from above,the left side a horizontal section on the line 2--2 of Fig. 1. Fig. 3 isa vertical section on the line 3 3 of Fig. l. Fig. et is an enlargedfront view of the partsyby which the movement of the sawcarrying frameis obtained. Fig. 5 is a cross section on the line 5 5 of'Fig. 4. Fig. 6is a horizontal section on the line 6--6 of Fig. 4.

Fig: 7 is an enlarged plan view, with partial horlaontal section, of themechanism for dis'. placing the saws horizontally, with the dis-,placementf'indicaton Fig. Sis a front View of the parts represented inFig. 7. Fig. 9 is a transverse section on the line 9-9 of Fig. 10,Illustrating the mechanism for displacing the saws laterally,automatically and continu- Ously. Fig. lO is agplan View, partially insection of the part of thermachine'to which'the abovemechanism isIitted.A

Corresponding letters indicate corresponding parts. V

Two upright posts K are provided at each side of the machine, at theends, and a sawcarrying frame is provided consisting of longitudinalbars J, arranged in pairs at each side of the machine, each pair beingconnected by diagonal cross pieces j which also brace the frame.v Crossbars i serve the same purpose. The bars J, at their ends are formed intobands or eyes j that embrace the uprights K, whereby the frame may bemoved vertilixed, while the bearings e are movable,`be f ing adapted tobe displaced and adjusted by means of screws Aworking in fixed femalethreaded bearings, as shown.'v This arrangement permits Of stretchingthe saws A which pass over the drums. l

. The shafts O of the drums E are not located exactly inV the centers ofthe drums; the eccentricity however is only about an eighth to a quarterof a line', and willlnot be noticeable inthe drawings; but in order'thatthe arrangement may be understood, I havey illustrated it in a diagram,in Fig. 1f. I

0, o, o, 0,'are the shafts on which the four drums rotate. Q

c', c2, c3, represent, by way'of example,three different positionsoccupied by the geometrical centers of the drums during their rotationonv their shafts 0;,in practice, the distance between the pointe (centerof rotation 0f the drum) and the geometrical centerfishown in threederent positions c', c2, c3) isOnly, as stated above, about an eighth toay quarter of a line. It will be understood that the eccentricity is thesame for each of the'druns.

The lower bars J carry two 'shafts C, on which are mounted groovedrollers B, which are loose on the shaft. On one rside of the machine theshafts C extend `beyond' the frame J and are screw-threaded as shown atCl. A hand-wheel H, which is also threaded, is mounted on the screw ofthe shaft beyond a yoke F through 'which the threaded end of the shaftprojects, and 'the 'turning of the wheel serves to move the shafthorizontally.

dat on and extend over the drums E. Move ment is imparted to thesesawsbythe drums IOO E, and the eccentricity of the latter impart,besidesthe longitudinal movement, a slight rising and falling movement.These saw bladesplaced fiaton the drum pass in the grooves of therollers B which brings them to the vertical position.

lOne of the drums E is driven by means of a transmission belt passingover a series of pulleys P, one of which derives its motion from thedriving shaft M. I may of course employ other means for rotating thedrums.

After having thus described the machine in detail I will explain theoperation. The block of stone to be sawed is placed on the machine withits surface to be attacked close to the lower, vertically disposedportions of the saws. The drums, set in operation by any known means,carry the saws along. The frames are simultaneously lowered by themovement of the worms l l', worm-wheels Z2, and racks L, and all the sawblades attack the stone at the same time. The frames are lowered slowlyand the saws cut their way more and more into the stone, having, besidesthe longitudinal movement, slight up-and/ down movements owing to theeccentricity of the drums; A A2 A3 (Fig. la) indicate three positions ofthe saws, corresponding to the positions E E2 E3 of the drums. 'Iheobject 0f these reciprocating vertical movements is to permit the grainsof sand which are in the kerfs to fall each time that thesaws rise invorder to attack the stonetwhen the saws again come in'contact therewith.When the saws areat the bottom, having passed through the stone, thelatter isdivided into slabs having a thickness corresponding to thedistance between the blades. In order to be enabled to vary the distancebetween the saw-blades A, I mount sleeves b loosely on the shafts- C,between the grooved rollers B so as to keep them apart; two sleeves b',provided with setscrews, serve to hold the rollersBand sleeves b on theshafts C. By varying the length ofl the said sleeves b, or by using agreater or less number of them, the rollers B .and

consequently the saw-blades A can be kept any distance apart, and thusslabs of any thickness desired can be cut. In Fig. 3, s indicates thelines on which the stone is divided. If .it is desired to obtain slabsthinner than the width apartofy the saws, one complete cut is made andthe frames J with the saws A are` then raised above the stone S and theshafts C withthe rollers B are displacedhorizontally a distance equal tothe desired thickness of the slabs this is eected by turnin gthewheelsH, and a very exact adjustment is obtained by means of the indicatorsfG.

When employing the modifiedmechanism shown in Figs. 9 and 10, I amenabled to'saw v slabs of an undulating or any othercurvilineareross-.section The cam .H',.mo.unted eccentrically on thespindle h', which revolves in bearings provided in the brackets F F',receives a continuous rotary motion from the y pulleys h; the shaft Cabuts with one end .against the periphery of the cam H', the other endof the shaft being under the influence of the spring R. Fig. 9 shows theundulating lines or kerfs s obtained when employing the cam H. The sawblades A must of course be very narrow to permit of their lateraldisplacement while passing'through the stone, but it will be understoodthat the cain H rotates very-slowly, in comparison withthe rotary speedof the. shaft C. It will be further obvious that by employing otherforms of cams, slabs of various cross sections can be produced, forinstance like the profile of balusters, rc.

I claim as my invention and desire to secure by Letters Patenty 1. Astone sawing machine, comprising a frame and rotatable drums mountedthere-V on, these drums being secured eccentrically upon their shafts,endless -saw blades passing at-over the said drums, shafts arranged onthe frame transversely to the direction .in which the saw blades travel,grooved rollers mounted on said shafts and adapted to bring the sawblades into a position perpendicular to that portion of the bladesfwhichis adj-acent to the drums, means for rotating the drums, and meansfor'continuously advancing the frame with the saws during the operationof the machine, substantially as described.

2. A stone sawing machine, comprising a frame and rotatable drumsmounted there-4 on, these drums being secured eccentrically upon theirshafts, endless saw blades passing flat over the said drums, shaftsarranged on the frame transversely to the di-rection in which the sawblades travel, grooved rollers .the saw bladesk intoa positionperpendicular to that portion of the blades-which is adjacent to thedrums, means for displacing the said shafts longitudinally, means forrotating the drums, and means for continuously advancing the frame withthe saws duringthe operation of the machine, substantially as described.

3. In a stone sawing machine of the'kind described the combination withthe traveling frame, the drums mounted thereon, the endless sawbladespassing over the drums, the transverse .shafts likewisevmounted on thesaid frame, and the grooved rollers secured to the said shafts, ofsprings bearing against one end of the said shafts, cams in continuouscontact with the'- other ends of the said shafts and adapted to displacethe saine longitudinally, andmeans for rotating said cams, substantiallyas described.

Intestimony that I claim the foregoing as my own I havehereunto affixedmy signature in presence of two witnesses.

ANTOINE JEANSAUME.

Witnesses:

ROBT. M. HooPER, J. MoMHARD.

ioo

mounted `on said shafts and adapted to bri-ng lIO

